Let's go back rue Rambuteau.
When you arrive by numbers 3 and 5 of the street, look at the big marks on the pavement and the road. No doubt, (I have checked it) they follow the layout of the wall!
Difficult for the few passers-by, I should say rather the wall-passers, to understand my excitement when I discovered these.

Let's continue along the rue des Francs-Bourgeois, where we will stop at no. 55 to enter the courtyard of the Credit Municipal, an old money-lending institution.
Follow the line on the ground, marking the layout of the wall of Philip Augustus. At the end of the second small courtyard, you will see a pink brick tower. Its base is the remains of a wall tower discovered in 1879.
Quite an unpleasant discovery for the architect in charge of new buildings for the Crédit Municipal. Unsuccessful to have it demolished, he had it topped with a second brick tower in the same style as the new building!

Ox head fountain – Blancs Manteaux Market
6, rue des Hospitalières Saint-Gervais
Atget - 1906
(Médiathèque Architecture et Patrimoine)

This lovely garden is composed of the former private gardens belonging to the three mansions, hotels d'Albret, Barbes and de Coulanges.
I remember my mother telling me about it when it was created in the 2000s. She was one of the few to enjoy this cute and very quiet garden as it was then very little known.

There is a tower of the wall of Philip Augustus, still visible at the entrance of the garden. The decorations inside the tower were created afterwards when the tower, located in the former private garden of the Hôtel d’Albret was converted into a summer dining room and later into a chapel.

After this nice break, personally I could stay here for hours, let's go out to the left onto Rue des Rosiers. Let’s take rue Pavée to the left up to the intersection with rue Mahler.

The vestige here has nothing to do with the wall of Philip Augustus. It is the only remains of La Force prison built in 1780 on the site of a former private residence of duc de La Force. During the French Revolution, more than one hundred and fifty people were executed there in three days of September 1792. Among them, Marie-Antoinette’s friend, the Princesse de Lamballe, who met a very violent end.

The prison was demolished in 1851 and the present rue Mahler took its place.

We are now rue Saint-Antoine. Between n°101 and 103 stood one of the most important fortified gates of the wall, heading to Meaux and Sens, two important cities. The medieval rue Saint-Antoine between the Louvre and this gate is still narrow. Beyond this point, the street becomes much wider as it was later opened across spaces outside the city.
Let's cross the street to take the narrow medieval rue du Prévôt and turn left onto rue Charlemagne.

Just before the rue des Jardins-Saint-Paul, where are the longest remains of the wall, there is the Montgomery tower. Part of the wall, it gets its name from Gabriel, comte de Montgomery, remembered for mortally wounding King Henry II in a jousting accident in 1559, in rue Saint-Antoine. For a short time after the accident, he was imprisoned in what became the Montgomery tower.

The wall now visible between Rue Charlemagne and Rue de l'Ave-Maria was incorporated in the Ave-Maria convent. It reappeared when the houses built on the outer side of the wall were demolished in 1946. The photograph taken by Atget show these buildings on the left side of the street. The area left vacant is today used as a sports ground for the students of the Lycée Charlemagne, along the longest and best preserved remnant of the wall.

Have a look at the courtyards of the Village Saint-Paul, where there are some antique dealers, open during weekends.

The wall continued up to the Seine in front of the Île Saint-Louis, where the Tour Barbeau was standing over the river. From there, heavy chains were linked to the Tournelle on the Left Bank, across the river and Ile-Saint-Louis, then inhabited and two natural islands at that time.